Expeditionary tank
Encyclopedia
The Expeditionary tank was a United States light tank
Light tank
A light tank is a tank variant initially designed for rapid movement, and now primarily employed in low-intensity conflict. Early light tanks were generally armed and armored similar to an armored car, but used tracks in order to provide better cross-country mobility.The light tank was a major...

 developed for the Armored Gun System
Armored Gun System
The Armored Gun System was a competition in the 1980s to design a light tank to replace the M551 Sheridan in the 82nd Airborne Division, as well as being expected to replace TOW-equipped HMMWVs in the 2d Stryker Cavalry Regiment ....

 competition in the 1980s by Teledyne Vehicle Systems (now L3 Communications Combat Propulsion Systems).

Development

In the late seventies Teledyne Vehicle Systems carried out several studies on a highly mobile light tracked vehicle, which could be used for a variety of tasks. The in-house trials lasted from 1980 to 1981. In 1982, a detailed design had been decided on. This vehicle competed in the Armored Gun System
Armored Gun System
The Armored Gun System was a competition in the 1980s to design a light tank to replace the M551 Sheridan in the 82nd Airborne Division, as well as being expected to replace TOW-equipped HMMWVs in the 2d Stryker Cavalry Regiment ....

 (AGS) competition. The first prototype was completed in December 1983, the turret was completed mid-1984. In October of the year took place in the Nevada test center mobility and reliability testing, in April 1985 the chassis and turret were united. A month later, in May, the vehicle was presented for the first time at the U.S. Army Armor Conference at Fort Knox. A 1986 test firing took place. In 1992, the Expeditionary tank lost the AGS competition to United Defense's CCV-L which was type classified as the M8 Armored Gun System. The Expeditionary tank was later solicited to other nations by Teledyne and later General Dynamics but was never bought.

Mobility

The tank would be transported by a C-130 Hercules
C-130 Hercules
The Lockheed C-130 Hercules is a four-engine turboprop military transport aircraft designed and built originally by Lockheed, now Lockheed Martin. Capable of using unprepared runways for takeoffs and landings, the C-130 was originally designed as a troop, medical evacuation, and cargo transport...

 or C-141 Starlifter
C-141 Starlifter
The Lockheed C-141 Starlifter was a military strategic airlifter in service with the Air Mobility Command of the United States Air Force...

. To ensure a high level of protection despite the low weight of the front end of the vehicle there was an armored crew chamber, behind it is the drive block, behind the crew. The vehicle was operated by a two-man crew, all sitting in the chassis
Chassis
A chassis consists of an internal framework that supports a man-made object. It is analogous to an animal's skeleton. An example of a chassis is the underpart of a motor vehicle, consisting of the frame with the wheels and machinery.- Vehicles :In the case of vehicles, the term chassis means the...

. The driver sits at the front left. The tank is equipped with a double bottom in order to increase the probability of survival in mine attacks.

Legacy

The turret developed for this vehicle is used on the M1128 Mobile Gun System. The autoloader was problematic and required a redesign.
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